Power-tube distortion is required for amp sounds in some genres. In a standard master-volume guitar amp, as the amp's final or master volume is increased beyond the full power of the amplifier, power tube distortion is produced. The power soak approach places the attenuation between the power tubes and the guitar speaker.
The second most common reason for causing a brake light on your dash is if your brake fluid is low. There is a sensor that is inside the brake master cylinder that can tell when the fluid gets low. This sensor will illuminate the brake warning light to let the driver know that the brake system needs attention asap.
The Check Engine Light Is On. If you vehicle's check engine light remains on constantly, and never goes off, there's a good chance that your vehicle has a faulty engine control unit. There are numerous reasons why a car's check engine light will remain on. The most common reason is a problem with the ECU. If you notice that your check engine light is always on, take your in vehicle in for service and request that they check the engine control unit. The Car Won't Start If your vehicle fails to start for no apparent reason, this is also a good indicator that there may be a problem with the ECU.